The small town of Everville becomes the site of a cataclysmic convergence when a rift between our world and the Quiddity is torn open, threatening to consume reality itself. As the barrier between dimensions thins, various individuals—some seeking power, others seeking redemption—are drawn into a conflict that transcends human understanding. The narrative follows a sprawling cast of characters whose lives intersect at the epicenter of this supernatural breach, forcing them to confront entities that defy conventional physics. Barker utilizes a multi-perspective framework to illustrate the encroaching chaos, shifting between the mundane reality of the town and the surreal, nightmarish landscapes of the Quiddity.

Everville is widely recognized as a dense, ambitious expansion of the mythology established in The Great and Secret Show. The work is noted for its imaginative scope and its commitment to a dark, surreal aesthetic that challenges the boundaries of traditional fantasy. Readers often point to the complexity of the narrative threads and the visceral nature of the prose as defining characteristics of the experience. The book remains a significant entry in the author's bibliography, reflecting a period of intense creative exploration into the nature of dreams and human desire.